From 4eec8e12c30015753c348f5ded11d48440db68b5 Mon Sep 17 00:00:00 2001
From: WickedJack99 <github.0yiic@passmail.net>
Date: Sun, 29 Jun 2025 20:28:44 +0200
Subject: [PATCH] .

---
 lab12/exc4/jacobi.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lab12/exc4/jacobi.cpp b/lab12/exc4/jacobi.cpp
index 5164a97..be3ca9d 100644
--- a/lab12/exc4/jacobi.cpp
+++ b/lab12/exc4/jacobi.cpp
@@ -101,7 +101,7 @@ void Jacobi::exchangeHaloLayersNodeMPIProcFirst(Matrix &phi)
 
     while (states->shmStates[0] == SharedmemState::Unread)
     {
-      if (rank_ == 0)
+      if (rank_ == (n - 1))
         std::cout << "102" << std::endl;
       MPI_Win_sync(win_);}